/* Стили для кнопки настроек */
#settingsBtn {
    position: fixed;
    top: 20px;
    right: 20px;
    width: 40px;
    height: 40px;
    background: #4a6fa5;
    color: white;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 20px;
    cursor: pointer;
    z-index: 1000;
    box-shadow: 0 2px 10px rgba(0,0,0,0.2);
    transition: all 0.3s ease;
}

#settingsBtn:hover {
    background: #3a5a8a;
    transform: scale(1.1);
}

/* Панель настроек */
#optTd {
    position: fixed;
    top: 0;
    right: 0;
    width: 300px;
    height: 100vh;
    padding: 20px;
    box-sizing: border-box;
    z-index: 999;
    overflow-y: auto;
}

/* Модернизированные кнопки навигации */
.modern-nav-btn {
    background: #4a6fa5;
    color: white;
    border: none;
    padding: 10px 20px;
    border-radius: 5px;
    cursor: pointer;
    font-size: 14px;
    margin: 5px;
    transition: all 0.2s;
    box-shadow: 0 2px 5px rgba(0,0,0,0.1);
}

.modern-nav-btn:hover {
    background: #3a5a8a;
    transform: translateY(-2px);
    box-shadow: 0 4px 8px rgba(0,0,0,0.2);
}

/* Лоадер */
#loadingDiv {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(255,255,255,0.8);
    display: none;
    align-items: center;
    justify-content: center;
    z-index: 1001;
}

.spinner {
    width: 50px;
    height: 50px;
    border: 5px solid rgba(74,111,165,0.2);
    border-top: 5px solid #4a6fa5;
    border-radius: 50%;
    animation: spin 1s linear infinite;
}

@keyframes spin {
    0% { transform: rotate(0deg); }
    100% { transform: rotate(360deg); }
}

/* Сообщения */
#statusDiv {
    position: fixed;
    bottom: 20px;
    left: 50%;
    transform: translateX(-50%);
    background: #4a6fa5;
    color: white;
    padding: 10px 20px;
    border-radius: 5px;
    opacity: 0;
    transition: opacity 0.3s ease;
    z-index: 1000;
}